//--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
// Copyright 2012 Microsoft Corporation. All Rights Reserved
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.   
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
//--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

//--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
// Copyright 2012 Microsoft Corporation. All Rights Reserved
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.   
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
//--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

namespace Preflight.Core.Execution
{
    using System.Collections.Generic;
    using Model;

    internal class VerificationsExecutorSequentially : VerificationExecutorBase
    {
        public VerificationsExecutorSequentially(PreflightOptions options) : base(options)
        {
        }

        public override IEnumerable<VerificationResult> Execute(IEnumerable<IVerification> verifications)
        {
            Log.LogVerbose("Starting sequential execution");
            var results = new List<VerificationResult>();

            foreach (var verification in verifications)
            {
                Log.LogVerbose("Executing {0} in category {1}", verification.Name, verification.Category);
                var result = this.ExecuteVerification(verification);
                results.Add(result);
                Log.LogVerbose(
                    "Finished {0} in category {1}. Passed: {2} Execution Time: {3}", 
                    verification.Name, 
                    verification.Category,
                    result.Passed,
                    result.ExecutionTime);
            }

            return results;
        }

        private VerificationResult ExecuteVerification(IVerification verification)
        {
            using (var executionUnit = new ExecuteVerificationTask(verification, this.Options.VerificationTimeout))
            {
                executionUnit.Start();
                while (executionUnit.GetResult() == null)
                {
                    this.SleepBetweenPolls();
                }

                return executionUnit.GetResult();
            }
        }
    }
}
